Hi, blur reduction does NOT make everything too dark.
In fact, the brightness with blur reduction ON can be identical to blur reduction OFF, as long as the "persistence", or Strobe Duty is set to a high enough value. A "1.5ms" persistence (without a vertical total tweak, at 120hz refresh rate), which is equal to a Strobe Duty value of 0.083 x 18 or Strobe Duty = 018 (in the service menu) with blur reduction ON (monitor brightness should ALWAYS Be set to 100 with blur reduction on), is identical in brightness to Blur reduction OFF with monitor brightness set to 15.
*IF* you are using a Vertical Total tweak, the presence of a VT Tweak changes the base persistence values from the refresh rate default (which is usually the refresh rate divided by 100..example 120hz --> 1000 / 120 is 8.3, right? so 8.3ms, , 8.3 divided by 1000 is 0.083.
to 0.167 base persistence. So in this base, 1.5ms total persistence would be Strobe duty 009 (0.167 x 9).
Recommended brightness for normal daytime use is Brightness 20, anyway (assuming without blur reduction).
Either way, I find going HIGHER than 1.5ms total persistence with blur reduction on to be *TOO BRIGHT*, as it goes brighter than 120 cd/m2, which is the recommended comfortable viewing brigihtness.
Whenever strobing is enabled, the current to the backlight gets increased by 1.8x to compensate for the strobing.
If you are saying the monitor is too DARK With blur reduction enabled, this can only happen if you did not increase the monitor brightness when enabling blur reduction. This is where the S-switch presets (Gamer 1/2/3) come in very useful.
The Single Strobe option is for single frame strobing at refresh rates lower than 100hz. If single strobe is disabled, refresh rates lower than 100hz (60hz, 85hz, if 85hz is set via a custom resolution in Toasty X CRU) will double strobe. It has no effect on blur reduction off.