Getting the same issues grinding, AFK fishing, AFK horse training. Multiple servers, multiple characters. Only in the last 3-4 days.
The patch delivered march 24th seems to have alot of broken files which results in alot of crashes, stuttering and hang ups.
If you perform the "Scan Files" option on the launcher it keeps re-downloading the same gigabyte trying to replace broken files over and over each time you perform it (crc error), look in update.log in install folder if you're wondering. This wasn't a thing the patch before only the basic files download.
I reported the problem from my launcher and attached the log but this game keeps evolving/devolving so don't expect a quick fix.