Rendering fails

Hi there!
I'm new here, I posted stuff also in FB groups, but I have a recent problem. DR15b4 and b3 do not render my videos anymore. Rendering may start for a short moment, but then fps drop to zero, and it completely stops.
E.g. I have a project, that yesterday was rendered fine. I added some Text+ elements. This is where the problem started. I restarted my pc several times and tried to change some settings (fusion memory), but nothing helped.
Then, I took out all Fusion elements, to have at least the video rendered. Nothing helped...
I have no idea what to do, I'm afraid I can't render important projects.
Could the database be corrupted somehow? Or has someone experienced something similar? Can I "reset" DR somehow?
Thanks in advance!
I'm new here, I posted stuff also in FB groups, but I have a recent problem. DR15b4 and b3 do not render my videos anymore. Rendering may start for a short moment, but then fps drop to zero, and it completely stops.
E.g. I have a project, that yesterday was rendered fine. I added some Text+ elements. This is where the problem started. I restarted my pc several times and tried to change some settings (fusion memory), but nothing helped.
Then, I took out all Fusion elements, to have at least the video rendered. Nothing helped...
I have no idea what to do, I'm afraid I can't render important projects.
Could the database be corrupted somehow? Or has someone experienced something similar? Can I "reset" DR somehow?
Thanks in advance!