Version 1.4.8t is a special test version, suggested by Formula350.

This version performs a single run of a shortened pattern, and produces some slightly more detailed timing information.

Compare to Banded Worm Pairs Inf Filt 1.4.5t.

Sysytem:
Win10 Pro x64 (RTM v1607 b14393.447)
Ryzen 7 1700X @ 3.8GHz all core (mild 200MHz overclock; slightly undervolted)
G.Skill TridentZ 2x8GB @ DDR4-3200 13-13-13-30 1.425V (very tight sub-timings; originally Cas15 kit)
Other: MSI X370 Titanium motherboard, Samsung 256GB 970 EVO NVMe SSD(oem), HGST 6TB Helium spinner-HDD, Radeon R9 390 8GB.

Conditions:
-Windows Uptime is currently at a couple weeks; running old & unpatched version because I'm unable to do so with my slow internet. Impact? Probably negligible.
-Foldit client ~20hrs uptime, running recipe overnight for ~12hrs (aka not-optimal).
-Foldit thread-affinity set to Core5, Core6, Core7 (2 cores + 1 hyperthread core; aka overkill). These cores are on "CCX" #1 (Ryzen has 2x 4-core 8-thread 'processor blocks' combined to make a single 8C/16T monolithic die where each block is a CCX; programs set with cross-CCX thread affinity incur a slight latency penalty, so ideally one would assign to cores 0-7 or 8-15; newer versions of Windows 10 kernel are "CCX-aware" and do this automatically.)
-Client window is IN view during run, primarily background during 1.4.8 run (as I type this). This client is running off the SSD (removing any potential I/O bottleneck).
-Puzzle had only seen Two nights of Fracture v2.1 at 0.35 CI on AWP, but last night was E-DRW 2.8.1 which (unintentionally) ran it at CI 1.0; minor hand futzing before BWP tests to ensure gains are legitimately from the recipe(s) doing what they do and not simply low hanging fruit.
-Second instance of Foldit running a recipe in background (minimized), from the HDD and set to core13, core14, core15 (CCX #2). Likely only minuscule impact, if it's even measurable.

RESULTS - Puzzle 1833 "Revisiting 144: Black Mamba":
BWP 1.4.5t
Start score: 10802.757
Final Score: 10835.854
Total gain: 33.096
Run time: 1794
BWP 1.4.5t finished Sun May 3 17:10:14 2020
runtime = 00d:00h:29m:53s

BWP 1.4.8t
Start score: 10802.757
Final score: 10841.398
Total gain: 38.64
Run time: 1728 seconds
BWP 1.4.8t finished Sun May 3 17:50:35 2020
runtime = 00d:00h:28m:47s

Bold = better