So... I've had my iMac since late 2013. Everything has been perfect for the most part until this week. I know it's nearly summer, but I'm not a fan of beachballs. Every single thing I did on the computer would trigger a beachball and a wait. I wiped the drive and did a clean install. While I was there, I noticed my drive (Well, not the entire drive, but the Macintosh HD section was now in APFS format, while the other portions were still MacOS Journaled Extended or whatever they were originally. Anyhow, I left it as it was and continued on. Most of the beachballs are gone, but I still get them when first loading anything for the first time.. (IE: First time I loaded system settings, 1st time I accessed safari prefs, if I type too fast (which is ridiculous as there is no such thing as typing too fast), etc.) but then they go away I also get it when closing Safari everytime. Occasionally one is popping up here and there, but it's more than I've ever had. I've done a diagnostic check on boot up using the D on the keyboard. No problems. I used disk utility and first aid to check the disk, no problems. The ram looks fine... I will take it out in a bit and reseat it to see if that fixes anything. Any other ideas on how to find out what is going on? If I have to replace the hard drive or something, it's not the end of the world. I just want to be sure I'm addressing the actual problem and not playing a guessing game. I don't feel like spending 4 or 5 grand on a new iMac anytime soon, so I'm looking to just remedy the situation and get another few years out of it. Any suggestions? Thanks!