Just a little reading to do before you laugh.
Don't be surprised if people laugh at your message. First, you claim that one sim is better than the other based purely on your taste, no real data. Then you bring to the discussion rF Pro, which definitely has little to share with the standard version: if you expect F1 team to use the same 40€ software we use... well, good luck.
The base code might be similar, but professional team then replaces it with their own model and usually real components too.
Add to this that in orded to support your assertion you link a couple of random links found on the web, where there are zero FACTS about one sim being better than the other (the second one end with the magnificent message "To the earlier comment from rallysmo about everything being a MOD. Why not? Better than everything being an $8.00 - $15.00 DLC purchase".
).
I'm sure ISI (or probably the team who developed the professional softwate) got a lot of useful data from teams that uses rF Pro and helped them in developing it, in the same way Kunos got proper feedback from Ferrari engineers while developing Ferrari Virtual Academy before, AC then. Or from Dallara, or from the F1 team they developed the simulator for in the past.
Each sim has its point of strenght and weakness: I see people claiming that rF2 is the best sim ever, yet they run endurance races with modded cars with no ERS systems, let alone a proper simulation of how the real AIDs work on the car (while in AC you can also set different traction control for front and rear tyres, just as an example). Many rF2 supporters claim that the sim's tyre model is better than anything else, then you find out that there is no sign of graining and blistering simulation like instead AC has.
In the same way, rF2 takes advantage of the fact of being an evolution of something that already existed (rF1), with additional feature like chassis flex that AC is missing (as far as I know).
Now, going back to topic, I think that the delay in the motion system might be related to the video recording: when I tried the Evotek simulator I didn't notice any major delay. The movement wasn't very noticeable, but was working properly. I had a similar feeling while watching a video recorded with a D-Box system: the video always seemed to be "late" compared to the driving, even if during my test I didn't have this feeling.