Ok, I finally found a workaround for the engine freezing on rtx laptops, which is not the best workaround but at least it lets you to work on any project if you dont have your monitor around.
Normally if you disable intel card from device manager before opening ue4, the engine doesnt work, but if you open the project with the intel card enabled and as soon as engine starts you should minimize the engine without clicking anything, its important that you minimize it, otherwise the video card crashes, then after minimizing go to the device manager and disable the intel card, then the editor should work.