C# winform-custom control not being painted while form is being resized

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C#

I'm working on a base for a small simple game-style program and I'm using Form1_Resize to control the scale and location of the premade controls i've placed. Currently they're just a picturebox and two blank buttons for testing however they scale and work perfect when the screen is being resized in this method.

I added a custom control to place images with transparency, and it functions fine as well however when I resize the screen the image from the custom control will disappear. I know it's to do with it being painted over and not being repainted when the screen is being resized. By telling it to refresh in the form1_Resize method it does reappear after resizing is done but still is gone while being resized. I've tried everything I could find really but this is still mostly new to me and i'm having no luck.

Here are my classes below.

What I have tried:

Form1.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace List_Game
{
    public partial class Form1 : Form
    {

        int baseFormWidth = 1280;
        int baseFormHeight = 720;
        int baseStartButtonWidth = 250;
        int baseStartButtonHeight = 100;
        int baseSettingsButtonWidth = 250;
        int baseSettingsButtonHeight = 60;
        // When resized, difference of form size and window size
        int windowWidthOffset;
        int windowHeightOffset;


        //Position of button box to center it when scaling screen
        int startButtonXOffset;
        int startButtonYOffset;
        int settingsButtonXOffset;
        int settingsButtonYOffset;




        public Form1()
        {
            InitializeComponent();


            windowWidthOffset = this.Width - GameWindow.Width;
            windowHeightOffset = this.Height - GameWindow.Height;


        }

        float WidthScale()
        {
            return (float)this.Width / (float)baseFormWidth;
        }

        float HeightScale()
        {
            return (float)this.Height / (float)baseFormHeight;
        }


        private void Form1_Resize(object sender, EventArgs e)
        {
             GameWindow.Width = this.Width - windowWidthOffset;
            GameWindow.Height = this.Height - windowHeightOffset;

            float scaledStartButtonWidth = baseStartButtonWidth * WidthScale();
            float scaledStartButtonHeight = baseStartButtonHeight * HeightScale();

            StartButton.Width = (int)scaledStartButtonWidth;
            StartButton.Height = (int)scaledStartButtonHeight;


            float scaledSettingsButtonWidth = baseSettingsButtonWidth * WidthScale();
            float scaledSettingsButtonHeight = baseSettingsButtonHeight * HeightScale();

            SettingsButton.Width = (int)scaledSettingsButtonWidth;
            SettingsButton.Height = (int)scaledSettingsButtonHeight;



            startButtonXOffset = GameWindow.Width / 2 - StartButton.Width / 2;
            startButtonYOffset = (int)(GameWindow.Height / 1.44) - StartButton.Height / 2;


            settingsButtonXOffset = GameWindow.Width / 2 - (SettingsButton.Width / 2);
            settingsButtonYOffset = GameWindow.Height - (int)(SettingsButton.Height * 1.25);


            Point startButtonLocation = new Point(startButtonXOffset, startButtonYOffset);
            Point settingsButtonLocation = new Point(settingsButtonXOffset, settingsButtonYOffset);

            StartButton.Location = startButtonLocation;
            SettingsButton.Location = settingsButtonLocation;
          
        }



        private void Settings_Click(object sender, EventArgs e)
        {

        }

        private void Start_Click(object sender, EventArgs e)
        {

        }
    }
}

ScreenDrawing.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Drawing;
using System.Windows.Forms;
using System.Drawing.Drawing2D;

namespace List_Game
{
    abstract public class ScreenDrawing : Panel
    {
        public ScreenDrawing()
        {
            this.ResizeRedraw = true;
        }

        protected Graphics graphics;

        abstract protected void OnDraw();

        protected override CreateParams CreateParams
        {
            get
            {
                CreateParams cp = base.CreateParams;
                cp.ExStyle |= 0x00000020; //WS_EX_TRANSPARENT

                return cp;
            }
        }

        protected override void OnPaintBackground(PaintEventArgs pevent)
        {
        }

        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);

            // Update the private member so we can use it in the OnDraw method
            this.graphics = e.Graphics;

            // Set the best settings possible (quality-wise)
            this.graphics.TextRenderingHint =
                System.Drawing.Text.TextRenderingHint.AntiAlias;
            this.graphics.InterpolationMode =
                System.Drawing.Drawing2D.InterpolationMode.HighQualityBilinear;
            this.graphics.PixelOffsetMode =
                System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
            this.graphics.SmoothingMode =
                System.Drawing.Drawing2D.SmoothingMode.HighQuality;

            // Calls the OnDraw subclass method
            OnDraw();

        }
      }
    }

DrawControl.cs

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace List_Game
{
    class DrawControl : ScreenDrawing
    {
        public DrawControl()
        {
            this.ResizeRedraw = true;
        }


        Image displayedImage = null;
        int width; 
        int height;
        Rectangle big;
        public void SetImage()
        {
        if (this.BackgroundImage == null)
            {
                displayedImage = global::List_Game.Properties.Resources.StartButton2;
            }
            else displayedImage = this.BackgroundImage;
        }

        protected override void OnDraw()
        {
             SetImage();
             // Sets the images' sizes and positions
            width = displayedImage.Size.Width;
            height = displayedImage.Size.Height;
            this.Width = width;
            this.Height = height;
            big = new Rectangle(0, 0, width, height);
            // Draws the two images
            this.graphics.DrawImage(displayedImage, big);
        }



    }
}