As advised, ran EtreCheck, results are below. This is problem is identical accross all five iMacs our office purchased 2 weeks ago, using a variety of different USB mice. Any help appreciated.
EtreCheck version: 3.1.5 (343)
Report generated 2016-12-09 09:40:30
Download EtreCheck from https://etrecheck.com
Runtime 2:02
Performance: Excellent
Click the [Support] links for help with non-Apple products.
Click the [Details] links for more information about that line.
Problem: Other problem
Description:
Scrolling mouse wheel one increment at a time yields no on screen response. User must scroll several increments rapidly to scroll/zoom on screen.
Hardware Information: ⓘ
iMac (Retina 5K, 27-inch, Late 2015)
[Technical Specifications] - [User Guide] - [Warranty & Service]
iMac - model: iMac17,1
1 3.2 GHz Intel Core i5 (i5-6500) CPU: 4-core
16 GB RAM Upgradeable - [Instructions]
BANK 0/DIMM0
8 GB DDR3 1867 MHz ok
BANK 0/DIMM1
Empty
BANK 1/DIMM0
8 GB DDR3 1867 MHz ok
BANK 1/DIMM1
Empty
Bluetooth: Good - Handoff/Airdrop2 supported
Wireless: en1: 802.11 a/b/g/n/ac
Video Information: ⓘ
AMD Radeon R9 M380 - VRAM: 2048 MB
iMac 5120 x 2880
System Software: ⓘ
macOS Sierra 10.12.1 (16B2555) - Time since boot: less than an hour
Disk Information: ⓘ
APPLE HDD ST1000DM003 disk0 : (1 TB) (Rotational)
[Show SMART report]
EFI (disk0s1) <not mounted> : 210 MB
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
Macintosh HD (disk1) / [Startup]: 998.99 GB (899.53 GB free)
Core Storage: disk0s2 999.35 GB Online
USB Information: ⓘ
Broadcom Corp. Bluetooth USB Host Controller
Apple Inc. FaceTime HD Camera (Built-in)
WIBU-SYSTEMS AG, www.wibu.com WIBU-BOX/RU
Macally Peripherals Macally BUMPERMOUSE
Apple, Inc. Keyboard Hub
Apple Inc. Apple Keyboard
Thunderbolt Information: ⓘ
Apple Inc. thunderbolt_bus
Gatekeeper: ⓘ
Anywhere
System Launch Agents: ⓘ
[not loaded] 7 Apple tasks
[loaded] 172 Apple tasks
[running] 92 Apple tasks
System Launch Daemons: ⓘ
[not loaded] 40 Apple tasks
[loaded] 157 Apple tasks
[running] 105 Apple tasks
Launch Agents: ⓘ
[not loaded] com.adobe.AAM.Updater-1.0.plist (2016-11-21) [Support]
[failed] com.adobe.ARMDCHelper.cc24aef4a1b90ed56a725c38014c95072f92651fb65e1bf9c8e43c37a 23d420d.plist (2016-11-12) [Support]
[running] com.adobe.AdobeCreativeCloud.plist (2016-11-11) [Support]
[loaded] com.google.keystone.agent.plist (2016-12-02) [Support]
Launch Daemons: ⓘ
[loaded] com.adobe.ARMDC.Communicator.plist (2016-11-12) [Support]
[loaded] com.adobe.ARMDC.SMJobBlessHelper.plist (2016-11-12) [Support]
[running] com.adobe.adobeupdatedaemon.plist (2016-11-11) [Support]
[running] com.adobe.agsservice.plist (2016-11-13) [Support]
[loaded] com.google.keystone.daemon.plist (2016-12-02) [Support]
User Launch Agents: ⓘ
[loaded] com.adobe.AAM.Updater-1.0.plist (2016-11-21) [Support]
[running] com.spotify.webhelper.plist (2016-12-08) [Support]
User Login Items: ⓘ
iTunesHelper Application (2016-11-11)
(/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
Mail Application
(/Applications/Mail.app)
Calendar Application
(/Applications/Calendar.app)
HLA_Projects Volume
(/Volumes/HLA_Projects)
Google Drive Application
(/Applications/Google Drive.app)
USBOverdriveHelper Application
(~/.Trash/USB Overdrive.prefPane/Contents/Resources/USBOverdriveHelper.app)
Internet Plug-ins: ⓘ
AdobePDFViewerNPAPI: 15.020.20042 - SDK 10.11 (2016-11-21) [Support]
AdobePDFViewer: 15.020.20042 - SDK 10.11 (2016-11-21) [Support]
QuickTime Plugin: 7.7.3 (2016-11-11)
AdobeAAMDetect: 3.0.0.0 - SDK 10.9 (2016-11-11) [Support]
3rd Party Preference Panes: ⓘ
None
Time Machine: ⓘ
Time Machine not configured!
Top Processes by CPU: ⓘ
38% mdworker(17)
10% WindowServer
10% mds
6% trustd(3)
4% ocspd
Top Processes by Memory: ⓘ
1.57 GB Google Chrome Helper(8)
1.12 GB kernel_task
770 MB Mail
557 MB mdworker(17)
311 MB Finder
Virtual Memory Information: ⓘ
9.77 GB Available RAM
3.81 GB Free RAM
6.23 GB Used RAM
5.96 GB Cached files
0 B Swap Used
Diagnostics Information: ⓘ
Dec 9, 2016, 09:10:21 AM Self test - passed
Dec 8, 2016, 02:42:07 PM /Library/Logs/DiagnosticReports/Microsoft Excel_2016-12-08-144207_[redacted].hang
/Applications/Microsoft Office 2008/Microsoft Excel.app/Contents/MacOS/Microsoft Excel
Dec 7, 2016, 05:38:12 PM ~/Library/Logs/DiagnosticReports/Preview_2016-12-07-173812_[redacted].crash
com.apple.Preview - /Applications/Preview.app/Contents/MacOS/Preview
Dec 6, 2016, 04:06:38 PM ~/Library/Logs/DiagnosticReports/com.apple.WebKit.WebContent_2016-12-06-160638_ [redacted].crash
/System/Library/Frameworks/WebKit.framework/Versions/A/XPCServices/com.apple.We bKit.WebContent.xpc/Contents/MacOS/com.apple.WebKit.WebContent