TSP, currently 35% in I-fund, which aims to match the EAFE Index. Any reason I shouldn't push this higher?

I've got the other 65% split between the C and S funds (breakdown of those available [here](https://www.investopedia.com/articles/investing/061113/breaking-down-tsp-investment-funds.asp#toc-fixed-income-investment-index-fund-f-fund)) and honestly the numbers aren't looking too hot right now. Normally I'm on the "just ride it out" boat but I feel like maybe more non-US funding might not be a bad thing right now?