Hey guys, downloaded these beautiful cars.....They showed up nicely in the Showroom but the 2021 and the 2020 cars will not go into a race....They CTD when the track and cars are fully loaded, and the Trace file has no explanation as to why it is crashing.
Just thought I would let you know.

both F1-Mods do not run at the same time - you can only have one RMS-F1-Mod installed!
It is ideal, -if you completely reinstall GTR2, -and then only insert the F1-Mod (e.g. RMS-F1-2021)!

Potzblitz! Now you do know what CTD means!? Guess what that was my point too right from the start. It still does not work for me either. And I have tried several times only with 2021 version. A modder I know has said that there is a fault probably in one a driver's head animation-file or such, so his logfile said. That was a free hint there is no charge.

Thank you for the answer Randolf.....I have all 40 cars in a custom championship I made....they all run, but the 2020 F1 cars have scrambled graphics.....The 2021 cars look perfect.....I believed it was a CAS problem as they both have the same CAS names for the teams.....so I renamed the 2020 cars CAS files but then they CTD with an error for SLOT 38 (happened 3 times in a row). I renamed them back to the old name and they load fine with the 2020 cars having scrambled liveries.....The most interesting thing about this is the ONE of the 2020 cars looks perfect....its team mate car is scrambled....that is the Grosjean Haas....that is very strange to me that 19 cars are scrambled graphics but 1 car is perfect....Going to do more experimenting, but at least I have the 2020 and 2021 mods running together. The results are pretty realistic also, so great job on that....What I did is made a vanilla GTR2 version (I now have 16 different GTR2 loads on this computer) and it didn't run.....so I added the 10th anniversary EXE to the vanilla game and I will be damned it worked. So while all the cars might now look the way they should, they all run, and they run competetively.

Scott in the Philippines

Just ran a 63 lap race at Imola with the 40 cars....slowest cars lapped 3 times so I need to speed them up a little bit. Main issue is tire wear...I have the Pirelli 2018's that come with the mod set at 7x wear and the average pit stop occurred at lap 51, so will go through my folder of open wheel tires to try to find one that will pit much earlier...I like my F1 championships to have to pit once right after the mid way point of a race. I have a ton of tires to choice from it will just take time with the experimenting. The cars run nicely with the Mercedes being the best, Red Bull second (lightened them a bit to get a little more closer to the Mercedes), then Ferrari's.

Scott in the Philippines