Substance Painter suddenly uses 100% of GPU

Hello, I have a Nvidia 1050 Ti (for a laptop, so yes weaker than the PC version), and up until now i had no issues with Painter when it comes to GPU usage, but after starting on my latest project, which is 5 texture sets, limited use of smart materials and mainly fill layers and paint filters, 2k document resolution, ultra low shader settings and.... loading time is 10 minutes. It's extremely difficult switching between texture sets and god forbid you hit the undo button. 

Does anyone have any idea what i might be doing wrong? 

(updated to latest driver on GPU)