20/20 hindsight slider management:
I've tried some optimization of the slider adjustment for the turns T31-T46 and would like to share the results. Yes, it's all water under the bridge by now, but I find it rather surprising that the optimal management has only 1 turn (T34) with 100%

slider. The 50% slider often minimizes losses which are occurring due to truncation and happen to be pretty high for the binary research method and our given values of total commerce (I considered these fixed in order to retain optimal tile management). The other constraints factored in were the turns on which Hunting & BW need to be online (T42 & T46).
In order to be ready to chop on T46, the plan is to continue our research of BW with 100% slider. This puts us at 1

and 194/187

in BW on T46 -> 7

overflow which are reduced to 5

clean OF (floor(7*100/126)=5) before they are multiplied by the new modifier and
truncated separately and
only then get added to the normal research progress, i.e.
Code:
floor((regular beakers + 1 freebee)*Modifier) + floor(clean_OF*Modifier).
As you can see, overflow beakers are pretty bad as they suffer from truncation twice.
But messing with the slider during T41-T45 won't reduce our losses because our total commerce amounts to values of 21|22.
Remember, we won't suffer from direct commerce losses
only for the following combinations:
total commerce = multiples of 2 -> slider = 50/50 okay.
total commerce = multiples of 5 -> slider = 20/80 & 40/60 okay.
total commerce = multiples of 10 -> all slider settings okay.
Unfortunately another turn with 50/50 will delay BW by 1 turn.
As you can see in the spreadsheet, the optimal(?) management would have brought us to 10

in the bank and 1

invested in the next tech, i.e. a gain of 9

for the cost of 4

(or 5 if next Modifier>=120).
If you find a mistake I made somewhere or can think of an even better way, please let me know!

And please
Tachywaxon, don't take this as any sort of criticism for your turn set. I wasn't aware of the overflow mechanics until now, the modifier situation for BW was unclear, and well, after all it's just a handful of beakers ...