Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

COMPARISON OF TEST RESULTS BEFORE AND AFTER OPTIMIZATION
| Optimization Algorithm | ||||
|---|---|---|---|---|
| DEF.USE | Set the domain value of visibility Limit | use LOD | Initial loading speed (second) | Degree of fluency |
| False | false | false | 11.2 | unfluency |
| True | false | false | 10.1 | less fluency |
| False | true | false | 8.9 | commonly |
| False | false | true | 7.6 | commonly |
| True | true | true | 6.5 | more fluency |