You may want to try the latest Catalina 10.15.5 beta version. It contains some Intel driver updates. Apple has a signup process to be able to get access to the betas. I'm not sure if there is an estimate for the public release.
What are your full system specs? You can use the 'System Report' button from the 'About This Mac' Apple menu item, or the 'System Information' app in the utilities folder. With that, I'll check with the Mac programmers.
