@ssama003 You can reimpose the fps limit now, so please do. (The question was whether the game would drop down to ~10 fps, and it did.) Your dxdiag shows that the Realtek audio driver is crashing, and while I don't know that this is happening in Sims 3, it could explain the issue. Asus offers a slightly newer driver for your laptop here:
https://rog.asus.com/laptops/rog-strix/rog-strix-g15-series/helpdesk_download/
Click "Show all_ under Audio, and find the Realtek driver dated August 26, the one with version number 6.0.8981.1. Install it and restart your computer, then try again to play.
If this doesn't help, mute the sound within Windows (click the sound icon in the lower-right corner of the screen), restart again, and try again to play.
If that doesn't help either, please look for new errors in the Reliability Monitor. Hit Windows key-R and enter "perfmon /rel" without quotes, and you'll see a chart of errors and updates with a column for each day. Today is on the right.
Look for any errors that happen while Sims 3 is running, specifically with the sound muted. If you find one, double-click it to see more details, then copy that info and paste it into a reply here. If you don't see a new error, check back in an hour or so—the Reliability Monitor doesn't always update right away.