Falche is an obsoltete cheating program, it may screw up savegames if you use Falche with any kind of sfall. besides Sfall1 by Crafty in FIXT is a lot outdated. Sduibek (FIXT 0.81a creator) made a small beta update somewhere along the thread, it's 0.90 prebeta. and there are few Sfall1 v1.8 versions floating aroud the net. newest one is from Jul 2018 AFAIR. Besides whole FIXT is kin of obsolete now. Lexx and his rotators team ported Fo1 on Fo2 engine. it's called 'Fallout: Et Tu' and currently in v1.3 it has Fo2 engine sfall and is compatible with latst version of sfall if you know how to merge it properly. anyways Et Tu has a thread in modding section of this forum. it is advisable to try Et Tu instead of FIXT. Also for FIXT cheating try Vad's F12se in a latest version. It should work far better than Falche. P.S. Don't worry about PC specs. Fallout FIXT can run basically on a potato PC. Actually if You'd get a proper x86 PC emulator and wine/windows, You'd be able to run Fallout on modern day smartphone at full speed ( provided you'll connect a mouse and keyboard to it someway). The errors you're getting are probably tied to using Falche as it is incompatible with savegames made with sfall library. Also based on the weird configuration of processor cores in certain AMD processors, it is advised *not* to use SingleCore=1 option in ddraw.ini . instead leave the option as default SingleCore=0. Thing is AMD in some of their processors with odd number of processor cores, have non standard Core numbering, and SingleCore=1 sets affinity to Core numer 0 which is the first core in standard cpu core numbering. Since Certain AMD CPUs have the first core numbered differently issues may arise. So it's best to leave the SingleCore= option as default and let windows handle it. From what i can tell from your screenshot AMD with 5 CPU Cores, might just be the case I'm talking about.