Hi OSTexo, also maybe one possibility is that you were quite close to running out of video memory before and with some of the changes MoI is now consuming somewhat more video memory even when you disable the multi-core use. That's something that I should be able to roll back in the next beta for the case where multi-core is turned off, but you may also want to look in your BIOS settings and see if there is a setting there for how much memory to devote to the GPU. If it's set to the absolute bare minimum try adjusting that upwards so that the GPU is not quite as limited in its memory use and see if that makes a difference.

- Michael