How to give a 64-bit windows app at least 4gb with Wine?

I have Ubuntu 18.04 with 32GB DDR4 3600Mhz and I am trying to run a 64-bit windows game that requires a minimum of 4GB to start loading, the total RAM requirements are 8GB for acceptable display of 30-40fps and ideally of 16 GB for better graphics.
RD

Note: Reducing the video settings to minimum does not help, the problem is lack of RAM to compose the frames. The CPU is Intel I7-8700 with 6 cores/12 threads, the video card has 8GB DDR5 (the wine video settings are set to 8192MB in registry)