🚀 Performance Boost

When rendering mulitple templates, the performance drops pretty quickly.

**Before**: (rendering time in seconds)

    0: 0.96700000762939
    1: 1.441999912262
    2: 1.8120000362396
    3: 2.1119999885559
    4: 2.6640000343323
    5: 3.1789999008179
    6: 4.0900001525879
    7: 4.4939999580383
    8: 4.7939999103546
    9: 5.614000082016

**After:**

    0: 0.58700013160706
    1: 0.54699993133545
    2: 0.57299995422363
    3: 0.53699994087219
    4: 0.55299997329712
    5: 0.5460000038147
    6: 0.55200004577637
    7: 0.55100011825562
    8: 0.57500004768372
    9: 0.62399983406067

Thanks to @thaasch, for reporting the 🐛