Carrying Capacity (Str) is 40% that of 5e SRD - I suggest it be improved

Greetings, 

The strongest Dwarf in my all-Dwarf party (based off an actual game) has 15 Strength. 

Even with 15 Strength, which is the highest I can have using the core point-buy or Standard Array, he cannot carry over 5 rations or any loot without falling to a whopping 3 Movement (base 5 -2 from Lightly encumbered). 

My entire party of Dwarves cannot carry any loot without falling to 3 Movement.
My Paladin sacrifices himself as a pack mule with 3 Movement. 

I understand there is a Scavenger faction that we can pay to have them find and sell the stuff in an area
(side question: do they also find the loot left from random encounters on the road?),
but still ...
a) I get encumbered by rations or food I hunt during travels
b) I would like to be able to carry a bit of extra resources and spare weapons without micromanagement to an excess.  I played many CRPG and I am use to management tight inventories, but this is too much in my opinion. 

My Paladin (15 Str) has a carrying capacity without penalty of 90 lbs, 
while the base SRD rule is 225 lbs in the core 5e SRD rules.
I see you are using an improved version of the Variant Encumbrance SRD rule,
which is extremely hardcore (5 lbs per Str), even stricter than yours (6 lbs per Str).

The base 5e rule maybe too generous as you can almost ignore weight (even says so in the rule itself), but in Solasta you can barely wear your gear and armor with 10 Str. 

Pathfinder: Kingmaker is another CRPG with a pretty strict weight limit, where with 8 Str you cannot even wear leather armor without encumbrance, but there are tons of magic items to circumvent this, like Strength items (+2 to +8), bags of holding (+150 to 250 lbs), bracers of AC instead of armor, etc.  It also pools extra weight capacity in a party-wide inventory for simplicity, while maintaining a strict weight limit, removes the need to micro-manage party resources between backpacks.

SUGGESTION : 

a) Raise the weight carry capacity value to a more reasonable number.  
For example, 10 lbs per Strength point, without a penalty (before being Lightly encumbered) would be "realistic" for a trained hardy fantasy character.
So a character with 15 Str (maximum possible with the buy-point system without a racial bonus) = 150 lbs (instead of 90 currently).
The average Strength 10 fantasy humanoid could carry 100 lbs without penalty, which is basically Medium Armor (20 to 40 lbs), 3 weapons (15 to 30 lbs), 10 Rations (20 lbs), a kit, some torches.  A common example is a Dex-based Ranger. 

b) Add a party stash, that pools party unused carrying capacity, for resources like food, some loot, etc.
It would also pool crafting ingredients which, I know, weigh nothing from what I can see.
- this second quality-of-life suggestion does not cancel the point that carrying capacity should be increased a bit. :P