I can also confirm this problem: maps/layers load very slowly.
I bought the game on Steam a few days ago and my fears (after reading some comments on forums) about maps loading slowly were true.
Maps load slowly while zooming in or out (with the Sentinel-2 satellite map).
- When I zoom in: it takes (at least) 3-8 seconds for the map to display the detailed version of the area.
- When I zoom out: areas that where previously hidden (out of the screen) are black for ~3-8 seconds, then the game eventually displays the map in these areas.
As advised on a Steam Discussion topic, I disabled the Sentinel-2 layer to only keep the BMNGv2 one. The game then displays the map faster but not always while zooming in.
I have installed the game on a SSD drive, I have a Nvidia GTX 1070 8Gb graphics card, 16 Gb DDR3 RAM + a 3.2 Ghz quad core CPU. I am quite surprised that these computer specs aren't enough to have a smooth experience in CMO..
I have been told that the Sentinel-2 layer is not installed on the SSD (locally), and that it is fetched from a remote server in real time..
I have a fiber internet (330 Mbps down.) and even with this download speed and my nvidia gtx 1070 8 Gb graphics card, the game is not able to load maps fast.
I also noticed that if you try to resize the CMO window, or if you try to maximize/restore the CMO window, and also if you hide/expand the side panel, it is quite slow as well.
IMO, there is a real performance problem with this game (and it's quite disappointing for a game sold for 67,99€)
I hope that developers will consider adding an option to download the Sentinel-2 map locally (on the hard drive), as an option.
Thanks to the Bitorrent protocol, players could be able to download this big texture pack, it would be also painless for your bandwidth. Once the first players have finished downloading the Satellite-2 map, the bitorrent file sharing could run in the background, allowing other CMO players to get the map from other players..