Another thing about Graphisoft's help page is that they haven't put the Teamwork slowness problem in the solved subheading. The slowness bug when just drawing in ArchiCAD 21 has been put under the fixed subheading. Both said they would be fixed in the 6000 build.
So, I just assume they are still working on it, yet haven't got a clue to when it will be fixed.
I have shared a project and I was the only one on it. Later, another employee joined in and the same slowness was experienced in both situations.
We don't use BIMcloud in the office though.
>ArchiCAD 23, 7000 USA FULL
>iMac, 27-inch, 2020, Processor: 3.8 GHz 8-Core Intel Core i7, Memory: 64 GB 2667 MHz DDR4, Graphics: AMD Radeon Pro 5500 XT 8 GB