I have recently purchased Vegas Pro 21 Edit and when installing it the program worked fine but there was an update to build 187 I believe it is and ever since installing that update my preview just lags non stop no matter which settings I change (preview quality, GPU acceleration, high task manager priority, etc) and it makes it really hard to edit videos so I was wondering if there's a way to install the older build of the program again or if there's a fix for preview lag outside of the obvious troubleshooting?

Thank you for taking the time to read this, any help is greatly appreciated.