Thank you so much for helping!!!
I 'sent' in report via EtreCheck, but I'll copy/paste here:
EtreCheck version: 2.9.6 (256)
Report generated 2016-02-26 16:56:38
Download EtreCheck from http://etrecheck.com
Runtime 1:43
Performance: Excellent
Click the [Support] links for help with non-Apple products.
Click the [Details] links for more information about that line.
Problem: Computer is too slow
Description:
Whenever I move a window, the computer freezes. Before I erased the HD, it would crash, or I would get the spinning beach ball indefinitely. I would often have to crash restart.
I since erased HD and have only been trying Safari and Firefox to replicate my problem. It persists, although not as much…and it hasn’t really beach balled yet. (20 minutes…?) But I feel I should be able to move windows around freely regardless.
Hardware Information: ⓘ
Mac mini (Mid 2011)
[Technical Specifications] - [User Guide] - [Warranty & Service]
Mac mini - model: Macmini5,1
1 2.3 GHz Intel Core i5 CPU: 2-core
16 GB RAM Upgradeable - [Instructions]
BANK 0/DIMM0
8 GB DDR3 1600 MHz ok
BANK 1/DIMM0
8 GB DDR3 1600 MHz ok
Bluetooth: Old - Handoff/Airdrop2 not supported
Wireless: en1: 802.11 a/b/g/n
Video Information: ⓘ
Intel HD Graphics 3000
Apple Cinema Display 1680 x 1050
System Software: ⓘ
OS X El Capitan 10.11.3 (15D21) - Time since boot: about 2 hours
Disk Information: ⓘ
TOSHIBA MK5065GSXF disk0 : (500.11 GB) (Rotational)
EFI (disk0s1) <not mounted> : 210 MB
Untitled (disk0s2) / : 499.25 GB (487.45 GB free)
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
USB Information: ⓘ
Apple Inc. BRCM20702 Hub
Apple Inc. Bluetooth USB Host Controller
Mitsumi Electric Hub in Apple Extended USB Keyboard
PixArt USB Optical Mouse
Mitsumi Electric Apple Extended USB Keyboard
Apple Computer, Inc. IR Receiver
Thunderbolt Information: ⓘ
Apple Inc. thunderbolt_bus
Gatekeeper: ⓘ
Mac App Store and identified developers
System Launch Agents: ⓘ
[loaded] 160 Apple tasks
[running] 76 Apple tasks
System Launch Daemons: ⓘ
[loaded] 204 Apple tasks
[running] 83 Apple tasks
User Login Items: ⓘ
None
Other Apps: ⓘ
[running] com.apple.xpc.launchd.oneshot.0x10000007.EtreCheck (2016-02-20)
Internet Plug-ins: ⓘ
Default Browser: 601 - SDK 10.11 (2016-01-13)
QuickTime Plugin: 7.7.3 (2016-01-13)
3rd Party Preference Panes: ⓘ
None
Time Machine: ⓘ
Time Machine not configured!
Top Processes by CPU: ⓘ
5% WindowServer
1% fontd
0% kernel_task
0% askpermissiond
Top Processes by Memory: ⓘ
892 MB kernel_task
459 MB softwareupdated
360 MB com.apple.WebKit.WebContent
147 MB mdworker(8)
98 MB mds_stores
Virtual Memory Information: ⓘ
10.00 GB Free RAM
6.08 GB Used RAM (3.66 GB Cached)
0 B Swap Used
Diagnostics Information: ⓘ
Feb 26, 2016, 02:23:53 PM Self test - passed
Feb 26, 2016, 01:21:08 PM /Library/Logs/DiagnosticReports/cloudd_2016-02-26-132108_[redacted].crash
/System/Library/PrivateFrameworks/CloudKitDaemon.framework/Support/cloudd