The question is quite broad so I will only focus on the habitable zones problem you also asked.
$$4 \ _1^1H \rightarrow \ ^4He^{2-} + 2e^+ + 2v_e$$
That is one of the most common fusions, the proton-proton chain reaction. It isn't exactly one fusion but a set of fusions which produces a helium atom as a final product.
This is the mass of hydrogen-1:
$$_1^1H = 1.00782503224194 \ u$$
This is the mass of the positron (e+):
$$e^+ = 5.48579909016\times10^{−4} \ u$$
And this is the mass of helium:
$$_2^4He = 4.002602 \ u$$
$v_e$ doesn't have mass since its energy:
Now solve the above equation using the mass of each particle:
$$4 \times 1.00782503224194 = 4.002602 + 5.48579909016\times^{10−4} + 2v_e $$
$$4.03130012896776 = 4,003150579909016 + 2v_e$$
$$4.03130012896776 - 4,003150579909016 = 2v_e$$
$$0,028149549058744 \ u = 2v_e$$
As you can see there is a net loss of mass that is transformed into energy. For being exacted it's a $0,00698269267408968993978186921633\%$, or $0.007\%$ for short.
That $0.007\%$ is the famous rate of mass to energy turned on the H->He fusion.
Now, what I say all that?
Well, mass-energy equivalence. That famous equation is:
$$E = mc^2$$
As you can read above $0,028149549058744 \ u$ of mass is transformed into energy, obviously using the above formula. So if you increase by ten the speed of light ($c$), the amount of energy produced (due mass to energy conversion) will also increase at least by ten (remember, squared $c$).
So, in addition to all the problems, you will find increasing the speed of light, like the change of wavelength or chemical bonds, your stars will output a hundred times (due $c^2$) more energy/light/heat, I am quite sure that won't be good for habitable zones.