Issue still persists. I can't even control Spotify when trainer is active. Controls are lagging when trainer is active.
This sound as an overloaded machine, even with the highest specs it'll go down as soon as you reach the limits.
In process explorer click on the trainer process and at the bottom you can see all loaded modules. Sort by company name and make a screenshot of all modules which are NOT "Microsoft Corporation".
Here it is. I tried to hide MS processes but I couldn't find a filter for it.