I have an 023 with the same .050 14in..Mine has only 1 carb adjustment for the low speed screw, so there isn't much you can do if it needs to run a richer fuel to air ratio high end which sounds like you might need if its bogging under load. 50 to1 fuel mix will do better if that is the reason. Thats what i use in my 023 because the higher mix ratio i use in most my fully adjustable saws causes my 023 to bog under load.
I would suggest premium oil at 50 to 1 with 90+ Octane fresh gas, maybe run a 1/4 cap of seafoam in a tank full a few minutes and then let it sit overnight to dissolve any varnish that could be restricting fuel flow thats hurting performance.
If you have a fully adjustable carb, I would prefer a richer oil mix, open the exhaust exit to 3/4 or little more then the exhaust passage on the cylinder. Then open the H screw until the saw burbles wide open not under load. Then it should run smooth and strong in the cut and not scream out of the cut.
Make sure your spark plug is gapped at .020, to wide can cause bogging also and it should have some tan on it if its not running to hot. Check the condition of the fuel line also, if it is very soft or cracked is an issue. Make sure sediment or crud is not in your tank and in your fuel filter.
All is right and a nice sharp chain, good bar and sprocket it should cut fine but I wouldn't expect it to have much speed bigger then 10in. Or so hardwoods. Like others said, some patience. It doesn't have the power to use much leverage, feed it softly through the wood. If you think a 16inch bar would be easiar for u to work with I say go for it. I prefer .050 for durability but it would pull the narrow kerf
a little easier and for how you use your saw it sounds like a good idea. Can always switch back to your 14 when your cutting smaller cruddy wood and use the 16inch for larger. Don't overlook having a good drive sprocket without a deep groove and a good chain not all stretched out , will rob your saw of power transfer.